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  • Oakdale Gas Main Extension

    Oakdale Gas Main Extension

    Location: Juneau and Monroe Counties

    MARS assisted Alliant Energy-Wisconsin Power and Light (WPL) with environmental permitting for a 23-mile gas main in Juneau and Monroe Counties. We coordinated a resource inventory and worked with WPL and their design engineer to evaluate potential routes and construction methods to minimize impacts to extensive local wetlands and water resources. MARS worked with WPL to develop supporting materials for a submittal to the Public Service Commission of Wisconsin and prepared applications for permits from Wisconsin Department of Natural Resources and US Army Corps of Engineers.

    During construction in 2015, we supported monitoring for permit compliance in cooperation with the WPL contractor and independent inspectors. We provided guidance to meet challenges of construction site dewatering and minimized the quantity of required erosion control materials through phased restoration of disturbed areas.

    • Utilities
  • River Temperature and Climate Change Study

    River Temperature and Climate Change Study

    Location: Confidential

    Large thermoelectric generating stations are a critical component to the energy infrastructure of the United States. Most of these generating stations discharge non-contact cooling water to a large surface water body, which requires a National Pollution Discharge Elimination System permit. These permits commonly have thermal criteria for protection of fish and other aquatic species.

    MARS assisted Exelon with evaluating future flow and temperature changes in the Mississippi River that might occur due to climate change, and implications for NPDES permit compliance for a generation facility. Using cutting-edge climate change model results from the North American Regional Climate Change Assessment Program that were de-biased to historical local climate data, MARS developed a long-term future meteorological dataset. This dataset was applied to a river temperature model of more than 220 miles of the Mississippi River to evaluate river temperature at the discharge for a range operational and climate change scenarios.

    • Utilities
  • Lake Windsor Golf Course

    Lake Windsor Golf Course

    Location: Windsor, WI

    Windsor Golf Ventures Inc. planned improvements to their existing golf course to re-grade several fairways and construct three elevated greens to reduce the frequency of flooding that caused hole closures. Some of the improvements were within the floodway of the Yahara River and required permits for floodplain zoning and shoreland erosion control. MARS used the HEC-RAS hydraulic model to analyze the impact of the proposed improvements on the floodplain, and to design compensatory storage and conveyance to mitigate floodplain impacts. An iterative approach was used to balance how much the tees and greens could be raised to reduce the impact on flood elevations.

    • Civil
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